6-苄基-5H-吡咯并[3,4-b]吡啶-5,7(6H)-二酮

6-phenylpyrrolo[3,4-b]pyridine-5,7-dione

2-羟基甲基-3-吡啶羧酸

甲基3-(氯甲酰基)-2-吡啶羧酸酯

2-diazonio-1-(2-methoxycarbonylpyridin-3-yl)ethenolate